Do cavity wall trays need to be fitted at dpc level ?

Question

Do cavity wall trays need to be fitted at dpc level ?

Answer 1

Depends on the particular application - not necessarily, although it is usual for dpc's to be stepped to direct the moisture to the weep holes, this doesn't have to be a pre-formed tray. Your local Building Inspector is usually quite interested in what you are doing about dpc's.

Answer 2

depends on the detail, some gas proof membrane details include them.